Hulling-machine.



No, 659,735. Patented Mar. l2, mol.

C. S. RIDER. HULLING MAcHmE.

(Application led Dec. 16, 1899.;

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HULLING MACHINE. (Application led Dec.' 16, 1S99.|

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CHARLES S. RIDER, OF SILVERCREEK, NEW YORK, ASSIGNOR TO' THE S. HOWES COMPANY, OF SAME PLACE.

-HULLING-MACHINE.

SPECIFICATION forming part of Letters Patent-No. 669,735, dated March 12, 1901.

Application iled December 16, 1899. Serial No. 740,505. (No model.)

To a/ZZ whom it `may concern,.-

Beit known that I, CHARLES S'. RIDER, a` citizen of the United States, residing at Silvercreek,in the county ot' Chautauqua and State of New York, have invented new and useful Improvements in Hulling-Machines, of which the following is a specification.

This invention relates to hulling-machines which are more especially designed for removing the hulls from rice, coffee, and similar material and which consist, essentially, of an inclosing hulling-case provided with a perforated bottom and with hulling-blades and a conical hulling-cylinder rotating in said case and provided with hulling-ribs, which coperate with the hulling-blades of the case. ln machines of this character as heretofore constructed the hulling-cylinder was adjusted lengthwise in the case for adapting the machine to different kinds and sizes of material by an adjusting device which was expensive in construction and which received the end thrust exerted by the hulling-cylinder, thereby causing the adjusting devices to become heated and wear out rapidly, so as to require frequent renewal.

One of the objects of my invention is to provide an improved construction of the hull ing-case and the hulling-cylinder which permits the employment of a simple and inexpensive adjusting device which is not affected by the end thrust of the hulling-cylinder.

To that end myinvention consists in making the hulling-case lengthwise adjustable with reference to the hulling-cylinder by an adjusting device which connects the case with the frame of the machine.

My invention has the further object to pro-- vide simple and reliable means for adjusting the hulling-blades in the milling-case.

ln the accompanyingdrawings,consisting of two sheets, Figure 1 is a vertical longitudinal section of a hullinginachine embodying my improvements. Fig. 2 is a vertical transverse section thereof inline 2 2, Fig. l. Figs. 3 and 4 are fragmentary horizontal sections, on an enlarged scale, in lines 3 3 and 4 4, Fig. l, respectively. Fig. 5 is a fragmentary transverse section in line 5 5, Fig. 3, on the same scale as Figs. l and 2.

Like letters of reference refer to like parts in the several figures.

A represents the frame of the machine, which may be of any suitable construction.

B represents the conical hulling-cylinder, mounted on a horizontal shaft Z9, lwhich is journaled in stationary bearings bon the upper part of the frame and which is held against axial movement in its bearings, preferably by collars b2, secured to the shaft and engaging with the inner sides of the bearings, as shown in Figs. l and 3.

C represents the hulling-case, inclosing the hulling-cylinder and consisting of an upper semicylindrical section c', which is arranged over the top of the cylinder, and a lower section c2, having vertical walls. The division between the upper and lower sections of the hulling-case is horizontally in line with the axis of the hullng-cylinder, and the shaft of the latter passes through the joint between these sections. The hulling-case is provided with a perforated semicylindrical bottom c3, which is arranged underneath the cylinder and which consists of woven wire or similar material. The perforated bottom of the hulling-case is secured with its longitudinal edges to the upper portion of the lower section of the hulling-case in any suitable manner.

d represents the hulling-ribs, which are arranged obliquely on the outer side of the hulling-cylinder, and D D represent the hulling-blades, which are mounted on the hulling-case and coperate with the hulling-ribs- The rice or other material to be hulled is introduced into the small end of the hullingcase by a hopper or spout d', opening into the top section of the case, and as the hullingcylinder rotates the material is carried rearwardly between the cylinder and the case and escapes through an elevated discharge-opening d2, formed in the upper section of the case, at the large end thereof. During the movelow the same.

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' ing through openings in the blade and through transverse slots f in the flange e on the adjacent upper edge of the lower section of the hulling-case, which supports the blade, as represented in Fig. 5. The flanges e e on the opposing edges of the upper and lower sections of the hulling-case are secured together, with the hulling-blades between them, by means of fastening-bolts g, passing through openings in the flanges and through transverse slots g' in the adjacent parts of the blades, as represented in ligs. 2 and 3. Upon loosening the bolts f and g the hulling-blades can be adjusted transversely into the desired position, this movement of the blades being permitted by the slots f g', through which the bolts pass. When it is desired to remove the upper section of the hulling-case for cleaning, repairing, or inspecting, this can be done Without disturbing the adjustment of the hulling blades by removing only the bolts g.

For the purpose of increasing or decreasing the space between the cylinder and the inner side of the hulling-case for adapting the machine to different kinds and sizes of material the case is adjusted lengthwise of the cylinder by the following means:

YH H represent two outwardly-projecting base-Hanges arranged lengthwise on opposite sides of the lower section of the case. These anges rest on two longitudinal rails or guideways h h, which form part of a base-frame H', arranged on top of the main frame. The elevated or standard bearings h', in which the shaft b is journaled, are formed on or secured to this base-frame, at opposite ends thereof. The base-flanges H H are held against transverse movement on the rails by a shoulder h', arranged on each rail and engaging with the outer edge of the adjacent iian ge. Each baseange is held upon its guide-rail by a gib o1' guide-plate'h2, which is fastened by bolts to the outer part of the rail and which overhangs the adjacent base-flange, as represented in Fig. 2.

I I represent two longitudinal adjustingscrews, which bear with their heads against opposite ends of the hulling-case and which Work with their outer screw-threaded ends in internally-threaded lugs i t'. These lugs may be arranged on the standards of the bearings in Which the shaft of the hulling-cylinder turns or on some other stationary part of the machine. Upon loosening one of the adjusting-screws and tightening the other adjustingscrew the hulling-case will be moved a, f l 669,735

lengthwise in one direction, while upon reversing the movement ofthese screws the hulling-case will be moved in the opposite direction. After the hulling-case has been shifted to the desired position the same is securely held in place by means of jam-nuts 'i2 t2, arranged on the adjusting-screws and bearing against the lugs i t. This means of adjusting the hulling-case is exceedingly simple, re-

liable, and inexpensive in construction and is not subjected to any end thrust which is eX- `erted by the hulling-cylinder, thereby avoiding heating and wearing of the same.

After the rice or other material has been hulled the same is subjected to an air-current, which removes the hulls and other light particles from the rice, and then the rice is subjected to a polishing process, which nishes the rice. The polishing apparatus consists, essentially, of a perforated cylinder J, arranged in an inclosing case J/ below the hulling-case, and a rotary polishing-drum j, arranged in the polishing-cylinder. The drum is mounted on a longitudinal shaft j', which is journaled in bearings y2 on the main frame. The rice is conducted from the outlet of the hulling-case by a spout k into an air-trunk la and discharged from the lower end of the latter into a spout 7a2, which delivers the rice into the head end of the polishing-case. As the rice drops through the air-trunk k the hulls and other light particles are removed therefrom by the upwardly-moving current of air, which is produced by a fan L, having its eye connected With the air-trunk. The rice moves from the head end to the tail end of the polishing-case and escapes through an outlet-opening m in the tail end of the polishing-case. During the movement of the rice through the case the same is beaten and polished by ieXible flaps n, attached to the polishing-drum. Any small particles which are detached from the rice by the drum escape through the polishing-case into the inclosing case. The top of the latter communicates by an opening o with the space in the lower part of the hulling-case, and any particles which pass through the perforated bottom of the hulling-case drop into the inclosing case. The small particles passing through the hulling- 4case and the polishing-case may be collected on the bottom of the inclosing case and removed therefroin through a suitable opening in the same, or the same may be drawn off by the suction of an air-pipe p, connecting the inclosing cas'e with the suction of the fan..

I claim as my invention-- l. The combination with the ribbed hulling-cylinder and the hulling-case composed of sections, of a hulling-blade arranged between said sections and provided with transverse slots, and fastening-bolts which pass through the slots of the blade and secure the blade between said sections, substantially as set forth.

2. The combination With the ribbed hulling-cylinder, and the hulling-case composed IOO IIO

der mounted on a shaft which is journaled in said bearings, a hulling-case having external upright side Walls provided at their lower ends with lateral flanges which are horizontally adjustable on said guides, and an adjusting device connecting said hulling-case with said base-frame, substantially as set forth.

Witness my hand this 29th day of November, 1899.

CHARLES S. RIDER.

Witnesses:

FRED. W. THOMAS, OHAs. F. STACY. 

